UP FROM NEVADA CITY IN OUR LATER NEWSCASTS. SACRAMENTO RESCUE CREWS ARE SEARCHING FOR THE BODY OF A MAN WHO DISAPPEARED IN THE SACRAMENTO RIVER. KCRA 3'S TOM DUHAIN IS LIVE AT DISCOVERY PARK WITH THE CIRCUMSTANCES OF THIS APPARENT DROWNING. TOM? ACCORDING TO SACRAMENTO CITY FIRE DEPARTMENT, IT WAS VERY SIMPLE SITUATION AND COMPLETELY PREVENTABLE. A MAN WANTED TO COOL OFF. HE WENT FOR A SWIM IN THE RIVER. WITHOUT A LIFE JACKET. WITHIN MINUTES AN ARMY OF EMERGENCY RESPONDERS WERE SEARCHING IN THE WATER AND ABOVE THE SWIRLING CONFLUENCE. ON THE SHORE, A FATHER IN SHOCK. HE TOLD OFFICIALS HIS ADULT SON, 24, WENT INTO THE WATER TO COOL OFF, AND THEN DISAPPEARED. I SAW THE GUY RUNNING OVER THERE AND HE WENT FAR. AND THEN LIKE HE WAS GOING OVER THERE BY THE WATER. AND THEN HE JUMPED DOWN BUT HE DIDN'T SWIM OR NOTHING. NOT A GOOD SWIMMER. THESE CURRENTS AND TEMPERATURES CAN ACTUALLY TAKE YOU DOWN. AND NOT A VERY STRONG SWIMMER. SEVERAL DIVERS SEARCHED THE TURBULENT WATER WITHOUT FINDING A BODY AND MOST PEOPLE ON THE BEACH HAD NO IDEA SOMETHING HAD HAPPENED UNTIL THE FIRE DEPARTMENT ARRIVED. BUT WORD OF THE TRAGEDY BEGAN TO SPREAD. MY HEART JUST ACHES FOR THIS POOR MAN. AND I THINK EVERYBODY HERE NEEDS TO PRAY FOR HIM. IT'S FOURTH OF JULY. WE COME HERE TO HAVE A GOOD TIME. AND OH, MY GOD. WHAT A NIGHTMARE. IT'S SAD AND NOT THE SAME. I'M TRYING TO HAVE A GOOD TIME. BUT ME BEING -- AND IF IT WAS MY SON, YOU KNOW. NESS A DEATH -- THIS IS A DEATH. PEOPLE ARE ILL-PREPARED. AND BACK LIVE YOU SEE SOME PATROL BOATS IN THE AREA WHERE THEY BELIEVE THE VICTIM MAY BE. THOSE ARE PATROL BOATS THAT ARE ALSO NOT ONLY GUARDING THE AREA BUT ALSO PATROLLING A LOT OF -- JUST HEAVY RIVER TRAFFIC. WE HAVE SKI-DOOS AND BOATS AND EVERYTHING HERE TONIGHT. IF YOU GO IN THESE WATERS THEY ARE SO COLD AND TURBULENT AND UNPREDICTABLE THAT YOU'RE RISKING YOUR LEAF WITHOUT A LIFE JACKET. NO MATTER WHAT AGE AND EVEN IF YOU'RE A STRONG SWIMMER. REPORTING LIVE AT DISCOVERY